Printing mechanism.



E. D. BELKNAP.

PRINTING MECHANISM.

- APPLICATION FILED MAY6.1914.

Patented D60. 12, 1916.

4 SHEETSSHEET I.

E. D. BELKNAP.

PRINTING MECHANISM.

APPLICATION FILED MAY 6. :914.

Patented Dec. 12,1916.

4 SHEETS-SHEET 2.

E. D. BELKNAP.

PRINTING MECHANISM.

APPLICATION FILED MAY 6,19l4.

4 SHEETSSHEET 3.

Patented Dec. 12, 1916.

E. D. BELKNAP.

PRINTING MECHANISM.

APPLICATION FILED MAY 6. 19:4.

Patented Dec. 12, 1916.

4 SHEETSSHEET 4.

naoaaee.

'dpplication ed an a, rant. serial no. eaten.

To all whom it may concern 1 Be it own that l, Fnwrn l). Barnum r,

a citizen ofthe llnited tates of America, residing at East Urange, county of Essex, estate of New Jersey, have invented certain new and useful lmprovements in Printing Mechanism, of which the following is a specification.

My invention" relates generally tomato chines for printing with the aid of stencils, and the particular embodiment of the invens tion here shown comprises a hand operated;

rotary addressing machine employing stencil cards.

- 15 Heretofore stencil rinting machines have been constructed with ink reservoirs in "which a body of fluid ink was stored, and from which the ferred to the rolls or platen an operation with the stencils, did the printing. This body of fluid ink has always been a source of trouble and dificu'lty, especially in the case of ll machines designed to be sold to the public and operated to inexpert 25 persons, in that it is liable to spi or to dry up or'collect' dirt and gum up with age so that the machine ceases to operate satisfactorily. When a new body. of such ink is prepared by a user 'ineerienced in the tu printers art, it "is'rarely of the right consist'ency and character. lflllore'over it is impracticable to ship a machine to the cue-- tomer With-the ink the reservoir, and unless an expert is sent to put the ink foun- 35 tain and apparatus in operative condition, the customer is apt to have .trouble with the ink from the start. My invention evercomes these dificulties b substituting for the usual ink fountain, octor roll, etc... a

ple roll of absorbent felt which, l have discovered, will hold enough "ink when saturated to last through tens of thousandsofprinting operations. en. the supply of ink contained by the felt roll is ultimately t5 easily be substituted, and another long period of uninterrupted usefulness secured for the machine. lln the case of the owners of small hand machines the fresh rolls of felt saturated to the right degree by the en pert manufacturer with ink of exactly the right description can be shipped to users and inserted in the machine by .any person 6' "without requiring any skillful manipulation.

rotation and shown in the accompanying or nr onauen, new when Speclncauon of Letters Jlatent.

was gradually trans-.,

which, in co-.

'ing apparatus.

exhausted, a new or recharged one can The particular machine embodying my in-' Patented nee. reg me.

four sheets of drawings also presents certain other novel and improved features here inafter to be pointed out.

In the drags: Figure l, is an eleva tion of the machine looking at the right hand side, with parts broken away. Fig. 2,

is a plan view. Fig. 3, is a vertical longi-' tudinal section taken on line 3-3 of Fig. 2.

Fig. 4, is a detail side elevation of the a stencil card receptacle. Fig. 5, is a vertical cross section taken on line 5-5 of Fig. l, with parts broken away. Fig. 6, is a detail plan view of the card feeding slide, with parts broken away, and Fig. 7, a detail ver- 1:

tical sectional view of the same taken on line 7-7 of Fig. 6.

lhroughout the drawings like reference characters indicate like parts.

l, is the main frame having legs cast it thereon and terating preferably in rubber tips 2, 2.

3, is thestencil card magazine at one end of the machine and above the level of the printing apparatus, while 4l,"is the card reby means of the cross bar 7, having connecting rod is pivoted to the era disk 9. lhis crank disk has handle 29, and hub 39,,by, which it is mounted on the driving cards from the print 'lhese cardstravel' in [the alongthe-card guide 5,

tltl P anupr wardly protecting ear to which the connect- 'ing rod 8, is pivoted.' The other end of the tld Shae urea the machine. The crank disk is .held on the shaft 10, by the screw bolts 37,

37, passing. through the retaining washer -36, and the hub 39, into gear 23, which isfastened upon shaft 10, by one of the set ion screws 46. The mechanism is cove and supported largely by the castmetal cover plate ll, which extends from the card a zine to the card receptacle and has the secylindrical portion 54, closed at one end 17,

and having an approximately semi-circular opening at the other end which is closed by the crank disk 9, this portion of the construction serving as a protecting housing for the upper member of the hereinafter to be described printing mechanism. 'lhis cover plate 11, also has the-vertical partition 13, cast in it and on this is cast the journal sleeve or hub 12, serving as a bearing for 'the shaft 10, and-the journal sleeve 14, serv- 16, is a supplemental journal sleeve for shaft 10, cast on the back plate 17, and 18, is a similar supplemental journal sleeve for shaft 15. The sector 19, and roll 20, rotate between the ends of these journal sleeves. The outer end of shaft 15, has a gear 24, meshing with gear23, and fastened to the shaft 15 by one of the set screws 46, passing through the hub 44 I 21, is a platen sector mounted on the shaft 22, journaled in the main frame '1, and provided on its outer end withithe gear 25, meshing with the gear 23. This gear 25, is held on shaft 22,. byoneof the set screws 46, passing through the hub 45.

28, is a rotatable ink pad composed of a section of thick, highlyabsorbent felt cut out in circular form and mounted on shaft 30 in cover panel 31, which is hinged so as to cover the .opening in the top of the semi-cylindrical portion 54, of cover plate 11, by means of hinge pin 32. The free end of the swinging panel 31, is controlled by the compression screw '34, mounted in the threaded lug 35, on the cover plate 11. The swinging panel- 31, preferably has an approximately semi-cylindrical recess 33, in

which the rotatable ink pad 28, is journaled.

The card guides 5 are located as 'shown so that the line of travel of the cards through them will be tangential to both the inking sector 19, and the platen sector 21, when the same rotate into contact.

26, a table supported by the main frame 1, slightly below the level of the card guides 5, but above the level of the shaft 22, of the platen sector, and slotted to permit the platen sector to rotate through it.

40, is a guide for envelops or other articles on which printing is to be done. This consists of a .vertical strip carried by the guide rod 42, which engages a downward projec- 'tion from the strip which passes from the slot 41, in the table 26. The guide rod 42,

is adjustable in the lug 46, and canbe held in any position by the set screw 47.

48, is a downwardly projecting pin at the outer end of the guide strip which serves as a handle by which the guide may be adjusted inwardly or outwardly.

27, indicates the outline partly in dotted lines of an envelopbeing run through the machine and 38, represents in dotted lines, the outline of 'a stencil card being run through the inking mechanism.

The operation of the device is as follows:

A series of stencil cards being stacked in mechanism. The operator pushes the envelop, or other article to be printed, along the envelop guide 40, and in between the sectors 19, and 21, at the time their cut-away portions are turned inwardly. When the full portions of these sectors rotate to the inner position they seize the stencil card and the envelop between them and force them along, at the same time pressing the film of ink on the surface of the inking sector 19, through the stencil perforations onto the envelop beneath. During a portion of each rotation the inkin sector 19, is in contact with the rotating ink transfer roll 20, and has its supply of ink replenished therefrom. This transfer roll is at all times in contact with the' rotatable ink .pad 28, and the amount of ink transferred from the pad to roll 20, is regulated by turning the set screw 34. When the rotatable ink pad ceases to perform its functions, through age or exhaustion 'of the ink, the hinged pan'el supporting it can be turned upward or removed altogether, and a new ink pad placed mechanism is protected from dirt and the operator is protected from possible contact with inked surfaces, and the total elimination of the objectionable ink fountain.

Various changes can be made in the form of the parts and the transfer roll 20, might be dispensed with and the construction thereby further simplified.

Much depends in the successful use of my invention on 'the selection of the best form of most highly absorbent felt as the material out of which the rotatable ink holding element is to be made. I find that,

so far as I am at present advised, the best results are to be obtained from the article known in the trade as medium soft Spanish woolen felt.

Having described my invention, I claim:

1. In a stencil printing machine the combination with an inking device comprising a pair of rotating inking and platen members, a reciprocating card feeding slide I and guides therefor, of a casing forthe. inking members, an actuating crank mounted on the shaft of one of the above recited pair naoaaee of rotating members, a handle on said crank exterior of said casing, and a connecting rod pivoted to said handle and to the card feeding slide.

2. In a stencil printing machine the combination with a rotary inking device provided with a driving shaft, reciprocating card feeding slide, and a casing for the inking device having an approximately semicircular opening on one side, of a crank disk mounted on the driving shaft of the inking device and closing said opening, and a connecting rod pivoted to said crank disk and reciprocating slide.

3. The combination of a casing of approximately semi-cylindrical shape open at one end but closed at the other and. having an interior crosspartition with hubs extending therefrom at right angles thereto, shafts journaled in said hubs, a set of inkin rolls mounted in the closed end of the caslng on said shafts, intermeshing gears mounted on sectors, a protecting housing for the upper member of said pair of rotating elements, means for feeding stencils along a line tangential to the meeting line of said sectors, and a feed table located slightly below the line of feed of the stencils and the lower edge of the housing and slotted to permit the lower sector to project upward through it, together with an envelop guide mounted on said table.

' EDWIN D. BELKNAP. Witnesses:

S. Wnmnene, G. P. Panama. 

